By Linda Tancs
Curving through southeastern Siberia for 400 miles, Lake Baikal is the world’s oldest and deepest freshwater lake. At that length, you’d be forgiven for thinking it’s more of a sea, but one fifth of the world’s fresh water is located there. Originating 25 millions years ago and plunging to a maximum depth of over 5,350 feet, you can only imagine the life forms dwelling in this ancient lake. In fact, over half of its species are unique to this watery habitat, such as the freshwater seal and its favorite meal, a translucent fish called golomyanka.
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